grey box

Please use comments below or
twitter to ask a question.

Energy to Make a Cup of Tea

Last Updated on Saturday, 14 October 2017 19:26

Not sure if this is funny or not but it is daft. I noticed one of my wife’s young employees (in her shop) refills the kettle completely to the top once he had taken enough from the kettle for a coffee. Why are you doing that I asked. “So that it is full for the next person”. But why if they are only making 1 cup tea, why boil 2 litres of water? I asked, it is a waste of money and energy .....

His reply was “ that is what we always do in our house, it is bad manners not to”. I stood aghast thinking about the uphill struggle that is needed to educate people in saving energy and not to pollute when a household culture ingrains the opposite in their children.

If we assume that the household in question does this three times a day, they boil 2 litres and then perhaps use enough for 2/3 cups of coffee, then they are boiling at least one litre unnecessarily each time. Boiling a 2 litre kettle uses about 0.2 kWh of energy, 3 times a day and this is 0.6 kWh. So half of this could have been avoided, if the kettle had been half filled, so they could save 0.3 kWh. For a whole year that is 0.3 x 365 = 109.5 kWh that equates to £16.863 (40.2kg) . The number in brackets is the amount of CO2 emitted because of this behavior.

Well its not an enormous amount but it is significant.

Add comment

Security code



Contact Us
About Us
Conditions of use and Copyright
Cookie Policy
test category
test section

Copyright © 2018
All Rights Reserved